<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>

<body>
    <div id="app">
        <input type="text" v-model.number.lazy="score">
        <!-- 当渲染的模板过多又没有统一的父级可以使用template -->
        <template v-if="score>90">
            <h1>成绩是</h1>
            <p>A</p>
        </template>

        <template v-else-if="score>70">
            <h1>成绩是</h1>
            <p>B</p>
        </template>
        <template v-else-if="score>50">
            <h1>成绩是</h1>
            <p>C</p>
        </template>
        <template v-else>
            <h1>成绩是</h1>
            <p>D</p>
        </template>

    </div>

    <script>
        Vue.config.prodactionTip = false

        const vm = new Vue({
            el: "#app",
            data() {
                return {
                    score: null
                }
            }
        })
    </script>
</body>

</html>